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发明名称
摘要
申请公布号
JPH0331772(B2)
申请公布日期
1991.05.08
申请号
JP19860262671
申请日期
1986.11.06
申请人
NIPPON MINING CO
发明人
OGATA TAKASHI;TERASAKI HIDETOSHI;KAWASUMI YOSHIO
分类号
C22B11/00;C02F1/42
主分类号
C22B11/00
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